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-rw-r--r--kernel/trace/trace_events_hist.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index b894d68082ea..ada87bfb5bb8 100644
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -2503,6 +2503,8 @@ static struct hist_field *parse_unary(struct hist_trigger_data *hist_data,
(HIST_FIELD_FL_TIMESTAMP | HIST_FIELD_FL_TIMESTAMP_USECS);
expr->fn = hist_field_unary_minus;
expr->operands[0] = operand1;
+ expr->size = operand1->size;
+ expr->is_signed = operand1->is_signed;
expr->operator = FIELD_OP_UNARY_MINUS;
expr->name = expr_str(expr, 0);
expr->type = kstrdup_const(operand1->type, GFP_KERNEL);
@@ -2719,6 +2721,7 @@ static struct hist_field *parse_expr(struct hist_trigger_data *hist_data,
/* The operand sizes should be the same, so just pick one */
expr->size = operand1->size;
+ expr->is_signed = operand1->is_signed;
expr->operator = field_op;
expr->type = kstrdup_const(operand1->type, GFP_KERNEL);